And if there is ever an opportunity for one set of fans to mock the other then you can expect it to be taken, simple as that.

So it should come as no surprise that after Manchester United completed the signing of £75million striker Romelu Lukaku, Red Devils supporters wanted to rub it in the faces of the Merseyside outfit.

But it seems it wasn't just the 'we signed a good player' that was getting thrown about when the announcement was made because Liverpool rather shot themselves in the foot a bit.

The Belgian striker trains alongside his new Manchester United teammates (Image: Getty Images)

Now we are big fans of Dominic Solanke.

His performances for the Young Lions were brilliant to watch and we are hopeful he can have a brilliant career.

Dominic Solanke has put pen to paper with Liverpool (Image: FIFA)

However, the Reds decided to announce his arrival at the very same time United were letting the world know they have once again parted with a significant amount of money to sign a ready-made superstar.

And as you can expect, United fans picked up on this fact, and well, poked fun at the apparent difference between the two Premier League giants.